fuser taking 100% cpu on Ubuntu 11.10
Server was running up super high load thanks to php5’s cron task.
/etc/cron.d/php5 on Ubuntu 11.10:
09,39 * * * * root [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete
/etc/cron.d/php5 on Ubuntu 11.04:
09,39 * * * * root [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) -delete
The 11.10 version runs fuser for each PHP session file, thus using all the CPU when there are hundreds of sessions.
Thanks to grazer for this fix.
Tagged with : Ubuntu